2003 CADILLAC CTS
87,000 MILES
Avatar
RAMONKM
  • MEMBER
  • 17 POSTS
Mt cts t/c shows up on the screen and the reduce engine speed pops up after that then it's followed by my transmission shifting hard and making a loud sound,can yo help please?
Oct 18, 2012 at 7:53 PM
Advertisement
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
Your going to have to have all the computers in your car scanned for codes and get the exact code numbers you have.Its not going to be a easy diagnoses most likely.
Oct 18, 2012 at 7:57 PM
Avatar
RAMONKM
  • MEMBER
  • 17 POSTS
Thanks I'll get back to you with the codes.
Oct 18, 2012 at 8:07 PM
Advertisement
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
Alright make sure you have it scaqanned with more then just a basic diyer scan tool that can read all the computers and not just the engine and transmission ones.
Oct 18, 2012 at 8:11 PM
Avatar
RAMONKM
  • MEMBER
  • 17 POSTS
Hey sorry to get back so late to you but here are the codes here goes.
P2176
P0638
P2135
P0121
P0221
P2119
B00652
P1779
P1917
B2019
B15a0
Oct 24, 2012 at 10:38 PM
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
You have a ton of throttle postion coedes and throttle circuit codes plus some codes i cant find that exist for that car.Lets start with the code P0221.Do you have a multimeter to do some testing?
Oct 25, 2012 at 11:28 PM
Avatar
RAMONKM
  • MEMBER
  • 17 POSTS
I don't but my mechanic may,is
There an electrical problem as well like the engine harness wire? Do you think I need a new throttle body cause I change the throttle position sensor already and I had the computer relearn it to calibrate it.
Oct 27, 2012 at 12:38 AM
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
With doing some testing cant really answer those questions.
Oct 27, 2012 at 2:02 AM
Avatar
RAMONKM
  • MEMBER
  • 17 POSTS
When get the mutimeter where should start testing and what should I be looking for?
Oct 27, 2012 at 8:43 PM
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
How did you replace the tps when its part of the throttle body?You will also need a scan tool that reads livew data to monitor the tps readings for the first part of the test.
Oct 27, 2012 at 11:57 PM
Avatar
RAMONKM
  • MEMBER
  • 17 POSTS
Sorry I meant I replaced the throttle pedal sensor.
Oct 28, 2012 at 1:24 AM
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
Oh ok to diagnose the code P0221 whjch is where i would start with the codes you need scan tool that can read tps readings etc and a multi meter.
Oct 29, 2012 at 4:33 PM
Avatar
RAMONKM
  • MEMBER
  • 17 POSTS
Guess what I found out the problem,when I remove the harness wire form the tps I notice that there are 6 prongs inside and two were bent,once I straighten them up and places the harness back in carefully it ran perfect.
Dec 11, 2012 at 10:51 PM
Avatar
SATURNTECH9
  • CERTIFIED EXPERT
  • 30,869 POSTS
Wow you got lucky on that one i wonder how they got bent?Glad to hear you found the problem.
Dec 11, 2012 at 11:24 PM